dunham



3 SheetsSheet 1.

H; DUNHAM. NAIL-DRIVING MACHINE FOR BOOTS AND SHOES,&c. No.188,874:. Patented March 27,1877.

Invzw'roa:

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WiTNEss'cs:,

NVPEYERS, PHOTO-UTHOGRAPNER. WASHINGTON. D G,

3 Sheets-Sheet 2.

H. DUNHAM.

NAIL-DRIVING MACHINE FOR BOOTS AND SHOES,&0. 110188.874.

Patented March 27,1877.

lllll i In PEIIII 'Vfl mun luw WITN ESS E S f/fm 3SheetsSheet 3. H. DUNHAM.

NAIL-DRIVING MACHINE FOR BOOTS AND SHOE-5,626. $10,188,874. Patented March 27,1877.

INVENTOR: w- '7 nmzsscs. Q

MPETERS. FNOTO-LITHOGRAPNER:WASHINGTON, D

Specification forming part of Letters Paten No a --Be"-it*'known t l-, HENRY Dom nant, of y {[Abington, in the-connty of Plymouthgand 1 i State ofMassachusetts, a e elaareeaai; a new and}usefulln proveirlcntsinq ing Machines; and" -I-dofhereby 'de'c'l'ii-rethat the following is a full, clear, and exactdescripition thereof, which will enable, others, skilledin the artrto which ,it pertains to make-and 'usethe same, a reference being had to the, accoimpanying drawing, and'the lettersof Lreferencemarked t hereonfwhi'ch form a partot'" ,t hi's specification; i

My invention relates to improvements in nail-driving machines, for the purpose of driv in headedinailsuinthe soles of boots and shoesfor articles ofasimilar nature, and to clinch the ends of' said nails on the underv sidew of the material; andmy inventionjconsists of 1 the combination -a-nduarrangement of the devices, as will hereinafter'be more fullysetforth anddescribedr I g On the accompanying drawings, Figure 1 represents a side elevation of my improved nail-driving machine. Fig. 2 represents a front elevation. Eigl3repre sents a rear view, Fig.

4 represents a central longitudinal 1 section, V and Fig. 5 r epresentsa partial verticalsectiona line with the driver"andfeed-wheel. Similar lettersrefer toflsimilar parts-wher-- j ejveri-they 1occuron the difi'erent parts of the On the drawingaarepresents the frame of the machine. I his the driving-shaft, provided with the wheel or gpulley, or its 'equivalent, {0;- Tog the forwardilendof'fthe' shaftbis-secured y -the sideandl face came, the objects of; which are twofold,jviz., by the facercam the inclined nail-way f 'is oscillatedt'orward and back on the'fulcrum-g thatis,the upper [endofthe arm h being attache'd'jinits lower end to the l inclined way f, the face-cam aforesaid engages withan adjustable screw,-t',projecting-through the arm h. kisana'djustable screw or pin,

against which the'arin h strike's after it has been acted upon bythe face-cam for the purpose of moving -the; nails downward on the inclined wayf toward the shoe, directly un- Qderneath the driver. The {inclined way f is provided, in its upper end, with a funnel or a h to 187 ail-Driv between them.

" tciiv'sms; lissIcNoa TO TIMOTHY 88,87 dated March 27, 1877 application filed jre'cept a'cle, 1, into which the nails are conl ducted through the spout, in from the rotary 'ifrail-deliverer mthat is set in rotary motion around its axis in the usual manner.

By means of the side cam e the driverbar o israis'efd' upward in the guide or bearing 1),

,in which the spring q is located for the purpose of forcing the driver-bar o downward as soon as the side cam e ceases to act upon the projection 0, that is attached to the said driver-bar. The lower end 1' of the driverbar 0 forms the driver, by means of which the tacks are driven into the material. The driver 1'- is moved up and down in the nail-tube s.

that is inserted in the forward part of the frame a.

The nail-tube s is provided with an opening in front, opposite the lower end of the inclined way f. as shown in Fig. 4, by which 'the'nails are delivered from the inclined way f into the nail-tube 8, directly beneath the driver *1, when the latter is in its highest position.

On two opposite sides of the nail-tube s are located movable dies t t, the lower ends of which projectthrough holes in the lower endof the said nail-tube, when they meet each other, by which each nail is centered and held automatically in its proper position preparatory to being driven. The said movable dies t t are flattened in their upper ends, so as to act like springs, and in this manner automatically confine the nail or tack between their lower ends till the driver descends, and, as the nail or tack is driven, the movable jawst texpand and allow the head of the nail to pass The nails are picked from the inclined way f by means of the horizontal pickenbar a, that is hinged to the lower end of the lever a, hung at w to a pin or bolt. and

operatedby means of the cam e, acting on the pin m, Fig. 2. The spring 3 produces the forward motion of the lever v and picker-bar u.

Below the nail-tube s is located the feed-wheel and clinching-surface l, which I prefer to make in one solid piece, as shown, provided with feed corrugations 22 on each side of the smooth clinching surface 3, as shown in Fig. 1, although I may, to equal advantage, make the feed-wheel in three pieces-that is, an independent clinchingsurface, having detached and independent feed-wheels on each side The clinching-surface and feed-wheel 1 is made to revolve with the shaft 4, to which it is secured. The shaft 4 revolves in movable bearings 5 and 6, the latter being made to swing around the pin 7, whereas the former has an up-and-down free motion in the frame a, and, hy'means of the arm or lever 8 and the weight 7 9, the bearing 5 is automatically pressed upward, so as to clamp the material firmly between the nail-tube s and the feed-wheel and clinching-surface 1. To the rear end of the feed-shaft 4 is secured the ratchet-wheel 10, that is acted upon by the pawl-lever 11, the upper end of which is secured to the adjustable eccentric 12 on the driving-shaft b. 13 is an additional pawl. acted upon by the spring 14, for the purpose of holding the feed-wheel and clinching-surface 1 in its proper stationary position during the driving and clinching of the nail or tack.

Having thus fully described the nature, construction, and operation of my invention, I wish to secure by Letters Patent, and claim- 1. In combination5*thefeed whfeeli, adapted to support and feed the safer and present acontinuous nail-clinching surface, the nailt tube 8, the inclinedwayqflf and driver 0', all

substantially as and for the purpose described. V

2. In combination, an fautomaticvfeederand nail-clinching surface, 1, on {the "underside of the material, with thefmovahle dies t t and driver 1', as and for the purpbse set forth.

3. In combination', -a fed-wlieel; 1 inclined way f, movable diest t, and driver-r, substantially as and for the purpose set forth and described. I it In testimony that I claim the foregoing as my own invention I have affixed my signature in presence of two witnesses.

. Hane 'DUNHAMQ p Witnesses: ALBAN ANDREN, a

HENRY'CHADBOURIY, 

